48 #define RPM_TO_REG(rpm, sr)		((60 * (sr) * 8192) / ((rpm) * 2))  argument
145 static u8 bits_for_tach_period(int rpm)  in bits_for_tach_period()  argument
149 	if (rpm < 500)  in bits_for_tach_period()
151 	else if (rpm < 1000)  in bits_for_tach_period()
153 	else if (rpm < 2000)  in bits_for_tach_period()
155 	else if (rpm < 4000)  in bits_for_tach_period()
157 	else if (rpm < 8000)  in bits_for_tach_period()
169 	int sr, rpm;  in max31790_read_fan()  local
178 			rpm = 0;  in max31790_read_fan()
180 			rpm = RPM_FROM_REG(data->tach[channel], sr);  in max31790_read_fan()
181 		*val = rpm;  in max31790_read_fan()
185 		rpm = RPM_FROM_REG(data->target_count[channel], sr);  in max31790_read_fan()
186 		*val = rpm;  in max31790_read_fan()